+++ /dev/null
-/*******************************************************************************
- * Agere Systems Inc.
- * Wireless device driver for Linux (wlags49).
- *
- * Copyright (c) 1998-2003 Agere Systems Inc.
- * All rights reserved.
- * http://www.agere.com
- *
- * Initially developed by TriplePoint, Inc.
- * http://www.triplepoint.com
- *
- *------------------------------------------------------------------------------
- *
- * This file contains processing and initialization specific to PCI/miniPCI
- * devices.
- *
- *------------------------------------------------------------------------------
- *
- * SOFTWARE LICENSE
- *
- * This software is provided subject to the following terms and conditions,
- * which you should read carefully before using the software. Using this
- * software indicates your acceptance of these terms and conditions. If you do
- * not agree with these terms and conditions, do not use the software.
- *
- * Copyright © 2003 Agere Systems Inc.
- * All rights reserved.
- *
- * Redistribution and use in source or binary forms, with or without
- * modifications, are permitted provided that the following conditions are met:
- *
- * . Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following Disclaimer as comments in the code as
- * well as in the documentation and/or other materials provided with the
- * distribution.
- *
- * . Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following Disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * . Neither the name of Agere Systems Inc. nor the names of the contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * Disclaimer
- *
- * THIS SOFTWARE IS PROVIDED \93AS IS\94 AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
- * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
- * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- ******************************************************************************/
-
-/*******************************************************************************
- * include files
- ******************************************************************************/
-#include <wireless/wl_version.h>
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/pci.h>
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-//#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/in.h>
-#include <linux/delay.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/bitops.h>
-#include <asm/uaccess.h>
-
-#include <linux/ethtool.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/ioport.h>
-
-#include <hcf/debug.h>
-
-#include <hcf.h>
-#include <dhf.h>
-#include <hcfdef.h>
-
-#include <wireless/wl_if.h>
-#include <wireless/wl_internal.h>
-#include <wireless/wl_util.h>
-#include <wireless/wl_main.h>
-#include <wireless/wl_netdev.h>
-#include <wireless/wl_pci.h>
-
-/* define the PCI device Table Cardname and id tables */
-static struct pci_device_id wl_pci_tbl[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_0), },
- { PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_1), },
- { PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_2), },
-
- { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE(pci, wl_pci_tbl);
-
-/*******************************************************************************
- * function prototypes
- ******************************************************************************/
-int wl_pci_probe( struct pci_dev *pdev,
- const struct pci_device_id *ent );
-void wl_pci_remove(struct pci_dev *pdev);
-int wl_pci_setup( struct pci_dev *pdev );
-void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev );
-
-#ifdef ENABLE_DMA
-int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp );
-int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp );
-int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc, int size );
-int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc );
-int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT *desc, int size );
-int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT *desc );
-
-void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp );
-#endif // ENABLE_DMA
-
-/*******************************************************************************
- * PCI module function registration
- ******************************************************************************/
-static struct pci_driver wl_driver = {
- .name = KBUILD_MODNAME,
- .id_table = wl_pci_tbl,
- .probe = wl_pci_probe,
- .remove = wl_pci_remove,
- .suspend = NULL,
- .resume = NULL
-};
-
-/*******************************************************************************
- * wl_adapter_init_module()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Called by init_module() to perform PCI-specific driver initialization.
- *
- * PARAMETERS:
- *
- * N/A
- *
- * RETURNS:
- *
- * 0
- *
- ******************************************************************************/
-int wl_adapter_init_module( void )
-{
- int result;
-
- DBG_TRACE( DbgInfo, "wl_adapter_init_module() -- PCI\n" );
-
- result = pci_register_driver( &wl_driver ); //;?replace with pci_module_init, Rubini pg 490
- //;? why not do something with the result
-
- return 0;
-} // wl_adapter_init_module
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_adapter_cleanup_module()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Called by cleanup_module() to perform PCI-specific driver cleanup.
- *
- * PARAMETERS:
- *
- * N/A
- *
- * RETURNS:
- *
- * N/A
- *
- ******************************************************************************/
-void wl_adapter_cleanup_module( void )
-{
- //;?how come wl_adapter_cleanup_module is located in a seemingly pci specific module
- DBG_TRACE( DbgInfo, "wl_adapter_cleanup_module() -- PCI\n" );
-
- pci_unregister_driver( &wl_driver );
-
- return;
-} // wl_adapter_cleanup_module
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_adapter_insert()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Called by wl_pci_probe() to continue the process of device insertion.
- *
- * PARAMETERS:
- *
- * dev - a pointer to the device's net_device structure
- *
- * RETURNS:
- *
- * TRUE or FALSE
- *
- ******************************************************************************/
-int wl_adapter_insert( struct net_device *dev )
-{
- int result = FALSE;
-
- DBG_TRACE( DbgInfo, "wl_adapter_insert() -- PCI\n" );
-
- if( dev == NULL ) {
- DBG_ERROR( DbgInfo, "net_device pointer is NULL!!!\n" );
- } else if( dev->priv == NULL ) {
- DBG_ERROR( DbgInfo, "wl_private pointer is NULL!!!\n" );
- } else if( wl_insert( dev ) ) { /* Perform remaining device initialization */
- result = TRUE;
- } else {
- DBG_TRACE( DbgInfo, "wl_insert() FAILED\n" );
- }
- return result;
-} // wl_adapter_insert
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_adapter_open()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Open the device.
- *
- * PARAMETERS:
- *
- * dev - a pointer to the device's net_device structure
- *
- * RETURNS:
- *
- * an HCF status code
- *
- ******************************************************************************/
-int wl_adapter_open( struct net_device *dev )
-{
- int result = 0;
- int hcf_status = HCF_SUCCESS;
-
- DBG_TRACE( DbgInfo, "wl_adapter_open() -- PCI\n" );
-
- hcf_status = wl_open( dev );
-
- if( hcf_status != HCF_SUCCESS ) {
- result = -ENODEV;
- }
-
- return result;
-} // wl_adapter_open
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_adapter_close()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Close the device
- *
- * PARAMETERS:
- *
- * dev - a pointer to the device's net_device structure
- *
- * RETURNS:
- *
- * 0
- *
- ******************************************************************************/
-int wl_adapter_close( struct net_device *dev )
-{
- DBG_TRACE( DbgInfo, "wl_adapter_close() -- PCI\n" );
- DBG_TRACE( DbgInfo, "%s: Shutting down adapter.\n", dev->name );
-
- wl_close( dev );
-
- return 0;
-} // wl_adapter_close
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_adapter_is_open()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Check whether this device is open. Returns
- *
- * PARAMETERS:
- *
- * dev - a pointer to the device's net_device structure
- *
- * RETURNS:
- *
- * nonzero if device is open.
- *
- ******************************************************************************/
-int wl_adapter_is_open( struct net_device *dev )
-{
- /* This function is used in PCMCIA to check the status of the 'open' field
- in the dev_link_t structure associated with a network device. There
- doesn't seem to be an analog to this for PCI, and checking the status
- contained in the net_device structure doesn't have the same effect.
- For now, return TRUE, but find out if this is necessary for PCI. */
-
- return TRUE;
-} // wl_adapter_is_open
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_probe()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Registered in the pci_driver structure, this function is called when the
- * PCI subsystem finds a new PCI device which matches the information contained
- * in the pci_device_id table.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * ent - this device's entry in the pci_device_id table
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_probe( struct pci_dev *pdev,
- const struct pci_device_id *ent )
-{
- int result;
-
- DBG_PRINT( "%s\n", VERSION_INFO );
-
- result = wl_pci_setup( pdev );
-
- return result;
-} // wl_pci_probe
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_remove()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Registered in the pci_driver structure, this function is called when the
- * PCI subsystem detects that a PCI device which matches the information
- * contained in the pci_device_id table has been removed.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- *
- * RETURNS:
- *
- * N/A
- *
- ******************************************************************************/
-void wl_pci_remove(struct pci_dev *pdev)
-{
- struct net_device *dev = NULL;
-
- /* Make sure the pci_dev pointer passed in is valid */
- if( pdev == NULL ) {
- DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" );
- return;
- }
-
- dev = pci_get_drvdata( pdev );
- if( dev == NULL ) {
- DBG_ERROR( DbgInfo, "Could not retrieve net_device structure\n" );
- return;
- }
-
- /* Perform device cleanup */
- wl_remove( dev );
- free_irq( dev->irq, dev );
-
-#ifdef ENABLE_DMA
- wl_pci_dma_free( pdev, dev->priv );
-#endif
-
- wl_device_dealloc( dev );
-
- return;
-} // wl_pci_remove
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_setup()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Called by wl_pci_probe() to begin a device's initialization process.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_setup( struct pci_dev *pdev )
-{
- int result = 0;
- struct net_device *dev = NULL;
- struct wl_private *lp = NULL;
-
- /* Make sure the pci_dev pointer passed in is valid */
- if( pdev == NULL ) {
- DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" );
- return -ENODEV;
- }
-
- result = pci_enable_device( pdev );
- if( result != 0 ) {
- DBG_ERROR( DbgInfo, "pci_enable_device() failed\n" );
- return result;
- }
-
- /* We found our device! Let's register it with the system */
- DBG_TRACE( DbgInfo, "Found our device, now registering\n" );
- dev = wl_device_alloc( );
- if( dev == NULL ) {
- DBG_ERROR( DbgInfo, "Could not register device!!!\n" );
- return -ENOMEM;
- }
-
- /* Make sure that space was allocated for our private adapter struct */
- if( dev->priv == NULL ) {
- DBG_ERROR( DbgInfo, "Private adapter struct was not allocated!!!\n" );
- wl_device_dealloc(dev);
- return -ENOMEM;
- }
-
-#ifdef ENABLE_DMA
- /* Allocate DMA Descriptors */
- if( wl_pci_dma_alloc( pdev, dev->priv ) < 0 ) {
- DBG_ERROR( DbgInfo, "Could not allocate DMA descriptor memory!!!\n" );
- wl_device_dealloc(dev);
- return -ENOMEM;
- }
-#endif
-
- /* Register our private adapter structure with PCI */
- pci_set_drvdata( pdev, dev );
-
- /* Fill out bus specific information in the net_device struct */
- dev->irq = pdev->irq;
- SET_MODULE_OWNER( dev );
-
- DBG_TRACE( DbgInfo, "Device Base Address: %#03lx\n", pdev->resource[0].start );
- dev->base_addr = pdev->resource[0].start;
-
- /* Initialize our device here */
- if( !wl_adapter_insert( dev )) {
- DBG_ERROR( DbgInfo, "wl_adapter_insert() FAILED!!!\n" );
- wl_device_dealloc( dev );
- return -EINVAL;
- }
-
- /* Register our ISR */
- DBG_TRACE( DbgInfo, "Registering ISR...\n" );
-
- result = request_irq(dev->irq, wl_isr, SA_SHIRQ, dev->name, dev);
- if( result ) {
- DBG_WARNING( DbgInfo, "Could not register ISR!!!\n" );
- wl_remove(dev);
- wl_device_dealloc(dev);
- return result;
- }
-
- /* Make sure interrupts are enabled properly for CardBus */
- lp = dev->priv;
-
- if( lp->hcfCtx.IFB_BusType == CFG_NIC_BUS_TYPE_CARDBUS ||
- lp->hcfCtx.IFB_BusType == CFG_NIC_BUS_TYPE_PCI ) {
- DBG_TRACE( DbgInfo, "This is a PCI/CardBus card, enable interrupts\n" );
- wl_pci_enable_cardbus_interrupts( pdev );
- }
-
- /* Enable bus mastering */
- pci_set_master( pdev );
-
- return 0;
-} // wl_pci_setup
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_enable_cardbus_interrupts()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Called by wl_pci_setup() to enable interrupts on a CardBus device. This
- * is done by writing bit 15 to the function event mask register. This
- * CardBus-specific register is located in BAR2 (counting from BAR0), in memory
- * space at byte offset 1f4 (7f4 for WARP).
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- *
- * RETURNS:
- *
- * N/A
- *
- ******************************************************************************/
-void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev )
-{
- u32 bar2_reg;
- u32 mem_addr_bus;
- u32 func_evt_mask_reg;
- void *mem_addr_kern = NULL;
-
- /* Initialize to known bad values */
- bar2_reg = 0xdeadbeef;
- mem_addr_bus = 0xdeadbeef;
-
- /* Read the BAR2 register; this register contains the base address of the
- memory region where the function event mask register lives */
- pci_read_config_dword( pdev, PCI_BASE_ADDRESS_2, &bar2_reg );
- mem_addr_bus = bar2_reg & PCI_BASE_ADDRESS_MEM_MASK;
-
- /* Once the base address is obtained, remap the memory region to kernel
- space so we can retrieve the register */
- mem_addr_kern = ioremap( mem_addr_bus, 0x200 );
-
-#ifdef HERMES25
-#define REG_OFFSET 0x07F4
-#else
-#define REG_OFFSET 0x01F4
-#endif // HERMES25
-
-#define BIT15 0x8000
-
- /* Retrieve the functional event mask register, enable interrupts by
- setting Bit 15, and write back the value */
- func_evt_mask_reg = *(u32 *)( mem_addr_kern + REG_OFFSET );
- func_evt_mask_reg |= BIT15;
- *(u32 *)( mem_addr_kern + REG_OFFSET ) = func_evt_mask_reg;
-
- /* Once complete, unmap the region and exit */
- iounmap( mem_addr_kern );
-} // wl_pci_enable_cardbus_interrupts
-/*============================================================================*/
-
-#ifdef ENABLE_DMA
-/*******************************************************************************
- * wl_pci_dma_alloc()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates all resources needed for PCI/CardBus DMA operation
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp )
-{
- int i;
- int status = 0;
-
-// lp->dma.tx_rsc_ind = lp->dma.rx_rsc_ind = 0;
-//
-// /* Alloc for the Tx chain and its reclaim descriptor */
-// for( i = 0; i < NUM_TX_DESC; i++ ) {
-// status = wl_pci_dma_alloc_tx_packet( pdev, lp, &lp->dma.tx_packet[i] );
-// if( status == 0 ) {
-// DBG_PRINT( "lp->dma.tx_packet[%d] : 0x%p\n", i, lp->dma.tx_packet[i] );
-// DBG_PRINT( "lp->dma.tx_packet[%d]->next_desc_addr : 0x%p\n", i, lp->dma.tx_packet[i]->next_desc_addr );
-// lp->dma.tx_rsc_ind++;
-// } else {
-// DBG_ERROR( DbgInfo, "Could not alloc DMA Tx Packet\n" );
-// break;
-// }
-// }
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc( pdev, lp, &lp->dma.tx_reclaim_desc );
-// DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
-// }
-// /* Alloc for the Rx chain and its reclaim descriptor */
-// if( status == 0 ) {
-// for( i = 0; i < NUM_RX_DESC; i++ ) {
-// status = wl_pci_dma_alloc_rx_packet( pdev, lp, &lp->dma.rx_packet[i] );
-// if( status == 0 ) {
-// DBG_PRINT( "lp->dma.rx_packet[%d] : 0x%p\n", i, lp->dma.rx_packet[i] );
-// DBG_PRINT( "lp->dma.rx_packet[%d]->next_desc_addr : 0x%p\n", i, lp->dma.rx_packet[i]->next_desc_addr );
-// lp->dma.rx_rsc_ind++;
-// } else {
-// DBG_ERROR( DbgInfo, "Could not alloc DMA Rx Packet\n" );
-// break;
-// }
-// }
-// }
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc( pdev, lp, &lp->dma.rx_reclaim_desc );
-// DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
-// }
-// /* Store status, as host should not call HCF functions if this fails */
-// lp->dma.status = status; //;?all useages of dma.status have been commented out
- return status;
-} // wl_pci_dma_alloc
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_free()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Deallocated all resources needed for PCI/CardBus DMA operation
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp )
-{
- int i;
- int status = 0;
-
- /* Reclaim all Rx packets that were handed over to the HCF */
- /* Do I need to do this? Before this free is called, I've already disabled
- the port which will call wl_pci_dma_hcf_reclaim */
- //if( lp->dma.status == 0 )
- //{
- // wl_pci_dma_hcf_reclaim( lp );
- //}
-
- /* Free everything needed for DMA Rx */
- for( i = 0; i < NUM_RX_DESC; i++ ) {
- if( lp->dma.rx_packet[i] ) {
- status = wl_pci_dma_free_rx_packet( pdev, lp, &lp->dma.rx_packet[i] );
- if( status != 0 ) {
- DBG_WARNING( DbgInfo, "Problem freeing Rx packet\n" );
- }
- }
- }
- lp->dma.rx_rsc_ind = 0;
-
- if( lp->dma.rx_reclaim_desc ) {
- status = wl_pci_dma_free_desc( pdev, lp, &lp->dma.rx_reclaim_desc );
- if( status != 0 ) {
- DBG_WARNING( DbgInfo, "Problem freeing Rx reclaim descriptor\n" );
- }
- }
-
- /* Free everything needed for DMA Tx */
- for( i = 0; i < NUM_TX_DESC; i++ ) {
- if( lp->dma.tx_packet[i] ) {
- status = wl_pci_dma_free_tx_packet( pdev, lp, &lp->dma.tx_packet[i] );
- if( status != 0 ) {
- DBG_WARNING( DbgInfo, "Problem freeing Tx packet\n" );
- }
- }
- }
- lp->dma.tx_rsc_ind = 0;
-
- if( lp->dma.tx_reclaim_desc ) {
- status = wl_pci_dma_free_desc( pdev, lp, &lp->dma.tx_reclaim_desc );
- if( status != 0 ) {
- DBG_WARNING( DbgInfo, "Problem freeing Tx reclaim descriptor\n" );
- }
- }
-
- return status;
-} // wl_pci_dma_free
-
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_alloc_tx_packet()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates a single Tx packet, consisting of several descriptors and
- * buffers. Data to transmit is first copied into the 'payload' buffer
- * before being transmitted.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- * desc - a pointer which will reference the descriptor to be alloc'd.
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
-// int status = 0;
-// /*------------------------------------------------------------------------*/
-//
-// if( desc == NULL ) {
-// status = -EFAULT;
-// }
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc_and_buf( pdev, lp, desc,
-// HCF_DMA_TX_BUF1_SIZE );
-//
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc_and_buf( pdev, lp,
-// &( (*desc)->next_desc_addr ),
-// HCF_MAX_PACKET_SIZE );
-// }
-// }
-// if( status == 0 ) {
-// (*desc)->next_desc_phys_addr = (*desc)->next_desc_addr->desc_phys_addr;
-// }
-// return status;
-} // wl_pci_dma_alloc_tx_packet
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_free_tx_packet()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Frees a single Tx packet, described in the corresponding alloc function.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- * desc - a pointer which will reference the descriptor to be alloc'd.
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
- int status = 0;
- /*------------------------------------------------------------------------*/
-
- if( *desc == NULL ) {
- DBG_PRINT( "Null descriptor\n" );
- status = -EFAULT;
- }
- //;?the "limited" NDIS strategy, assuming a frame consists ALWAYS out of 2
- //descriptors, make this robust
- if( status == 0 && (*desc)->next_desc_addr ) {
- status = wl_pci_dma_free_desc_and_buf( pdev, lp, &(*desc)->next_desc_addr );
- }
- if( status == 0 ) {
- status = wl_pci_dma_free_desc_and_buf( pdev, lp, desc );
- }
- return status;
-} // wl_pci_dma_free_tx_packet
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_alloc_rx_packet()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates a single Rx packet, consisting of two descriptors and one
- * contiguous buffer. The buffer starts with the hermes-specific header.
- * One descriptor points at the start, the other at offset 0x3a of the
- * buffer.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- * desc - a pointer which will reference the descriptor to be alloc'd.
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
- int status = 0;
- DESC_STRCT *p;
- /*------------------------------------------------------------------------*/
-
-// if( desc == NULL ) {
-// status = -EFAULT;
-// }
-// //;?the "limited" NDIS strategy, assuming a frame consists ALWAYS out of 2
-// //descriptors, make this robust
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc( pdev, lp, desc );
-// }
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_buf( pdev, lp, *desc, HCF_MAX_PACKET_SIZE );
-// }
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc( pdev, lp, &p );
-// }
-// if( status == 0 ) {
-// /* Size of 1st descriptor becomes 0x3a bytes */
-// SET_BUF_SIZE( *desc, HCF_DMA_RX_BUF1_SIZE );
-//
-// /* Make 2nd descriptor point at offset 0x3a of the buffer */
-// SET_BUF_SIZE( p, ( HCF_MAX_PACKET_SIZE - HCF_DMA_RX_BUF1_SIZE ));
-// p->buf_addr = (*desc)->buf_addr + HCF_DMA_RX_BUF1_SIZE;
-// p->buf_phys_addr = (*desc)->buf_phys_addr + HCF_DMA_RX_BUF1_SIZE;
-// p->next_desc_addr = NULL;
-//
-// /* Chain 2nd descriptor to 1st descriptor */
-// (*desc)->next_desc_addr = p;
-// (*desc)->next_desc_phys_addr = p->desc_phys_addr;
-// }
-
- return status;
-} // wl_pci_dma_alloc_rx_packet
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_free_rx_packet()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Frees a single Rx packet, described in the corresponding alloc function.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- * desc - a pointer which will reference the descriptor to be alloc'd.
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
- int status = 0;
- DESC_STRCT *p;
- /*------------------------------------------------------------------------*/
-
- if( *desc == NULL ) {
- status = -EFAULT;
- }
- if( status == 0 ) {
- p = (*desc)->next_desc_addr;
-
- /* Free the 2nd descriptor */
- if( p != NULL ) {
- p->buf_addr = NULL;
- p->buf_phys_addr = 0;
-
- status = wl_pci_dma_free_desc( pdev, lp, &p );
- }
- }
-
- /* Free the buffer and 1st descriptor */
- if( status == 0 ) {
- SET_BUF_SIZE( *desc, HCF_MAX_PACKET_SIZE );
- status = wl_pci_dma_free_desc_and_buf( pdev, lp, desc );
- }
- return status;
-} // wl_pci_dma_free_rx_packet
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_alloc_desc_and_buf()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates a DMA descriptor and buffer, and associates them with one
- * another.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- * desc - a pointer which will reference the descriptor to be alloc'd
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc, int size )
-{
- int status = 0;
- /*------------------------------------------------------------------------*/
-
-// if( desc == NULL ) {
-// status = -EFAULT;
-// }
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_desc( pdev, lp, desc );
-//
-// if( status == 0 ) {
-// status = wl_pci_dma_alloc_buf( pdev, lp, *desc, size );
-// }
-// }
- return status;
-} // wl_pci_dma_alloc_desc_and_buf
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_free_desc_and_buf()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Frees a DMA descriptor and associated buffer.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- * desc - a pointer which will reference the descriptor to be alloc'd
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
- int status = 0;
- /*------------------------------------------------------------------------*/
-
- if( desc == NULL ) {
- status = -EFAULT;
- }
- if( status == 0 && *desc == NULL ) {
- status = -EFAULT;
- }
- if( status == 0 ) {
- status = wl_pci_dma_free_buf( pdev, lp, *desc );
-
- if( status == 0 ) {
- status = wl_pci_dma_free_desc( pdev, lp, desc );
- }
- }
- return status;
-} // wl_pci_dma_free_desc_and_buf
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_alloc_desc()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates one DMA descriptor in cache coherent memory.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
-// int status = 0;
-// dma_addr_t pa;
-//
-// if( desc == NULL ) {
-// status = -EFAULT;
-// }
-// if( status == 0 ) {
-// *desc = pci_alloc_consistent( pdev, sizeof( DESC_STRCT ), &pa );
-// }
-// if( *desc == NULL ) {
-// DBG_ERROR( DbgInfo, "pci_alloc_consistent() failed\n" );
-// status = -ENOMEM;
-// } else {
-// memset( *desc, 0, sizeof( DESC_STRCT ));
-// (*desc)->desc_phys_addr = cpu_to_le32( pa );
-// }
-// return status;
-} // wl_pci_dma_alloc_desc
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_free_desc()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Frees one DMA descriptor in cache coherent memory.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT **desc )
-{
- int status = 0;
- /*------------------------------------------------------------------------*/
-
- if( *desc == NULL ) {
- status = -EFAULT;
- }
- if( status == 0 ) {
- pci_free_consistent( pdev, sizeof( DESC_STRCT ), *desc,
- (*desc)->desc_phys_addr );
- }
- *desc = NULL;
- return status;
-} // wl_pci_dma_free_desc
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_alloc_buf()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates one DMA buffer in cache coherent memory, and associates a DMA
- * descriptor with this buffer.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT *desc, int size )
-{
- int status = 0;
- dma_addr_t pa;
-//
-// if( desc == NULL ) {
-// status = -EFAULT;
-// }
-// if( status == 0 && desc->buf_addr != NULL ) {
-// status = -EFAULT;
-// }
-// if( status == 0 ) {
-// desc->buf_addr = pci_alloc_consistent( pdev, size, &pa );
-// }
-// if( desc->buf_addr == NULL ) {
-// DBG_ERROR( DbgInfo, "pci_alloc_consistent() failed\n" );
-// status = -ENOMEM;
-// } else {
-// desc->buf_phys_addr = cpu_to_le32( pa );
-// SET_BUF_SIZE( desc, size );
-// }
- return status;
-} // wl_pci_dma_alloc_buf
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_free_buf()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Allocates one DMA buffer in cache coherent memory, and associates a DMA
- * descriptor with this buffer.
- *
- * PARAMETERS:
- *
- * pdev - a pointer to the device's pci_dev structure
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp,
- DESC_STRCT *desc )
-{
- int status = 0;
- /*------------------------------------------------------------------------*/
-
- if( desc == NULL ) {
- status = -EFAULT;
- }
- if( status == 0 && desc->buf_addr == NULL ) {
- status = -EFAULT;
- }
- if( status == 0 ) {
- pci_free_consistent( pdev, GET_BUF_SIZE( desc ), desc->buf_addr,
- desc->buf_phys_addr );
-
- desc->buf_addr = 0;
- desc->buf_phys_addr = 0;
- SET_BUF_SIZE( desc, 0 );
- }
- return status;
-} // wl_pci_dma_free_buf
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_hcf_supply()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Supply HCF with DMA-related resources. These consist of:
- * - buffers and descriptors for receive purposes
- * - one 'reclaim' descriptor for the transmit path, used to fulfill a
- * certain H25 DMA engine requirement
- * - one 'reclaim' descriptor for the receive path, used to fulfill a
- * certain H25 DMA engine requirement
- *
- * This function is called at start-of-day or at re-initialization.
- *
- * PARAMETERS:
- *
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-void wl_pci_dma_hcf_supply( struct wl_private *lp )
-{
- int i;
-
- //if( lp->dma.status == 0 );
- //{
- /* Hand over the Rx/Tx reclaim descriptors to the HCF */
- if( lp->dma.tx_reclaim_desc ) {
- DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
- hcf_dma_tx_put( &lp->hcfCtx, lp->dma.tx_reclaim_desc, 0 );
- lp->dma.tx_reclaim_desc = NULL;
- DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
- }
- if( lp->dma.rx_reclaim_desc ) {
- DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
- hcf_dma_rx_put( &lp->hcfCtx, lp->dma.rx_reclaim_desc );
- lp->dma.rx_reclaim_desc = NULL;
- DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
- }
- /* Hand over the Rx descriptor chain to the HCF */
- for( i = 0; i < NUM_RX_DESC; i++ ) {
- DBG_PRINT( "lp->dma.rx_packet[%d]: 0x%p\n", i, lp->dma.rx_packet[i] );
- hcf_dma_rx_put( &lp->hcfCtx, lp->dma.rx_packet[i] );
- lp->dma.rx_packet[i] = NULL;
- DBG_PRINT( "lp->dma.rx_packet[%d]: 0x%p\n", i, lp->dma.rx_packet[i] );
- }
- //}
-
- return;
-} // wl_pci_dma_hcf_supply
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_hcf_reclaim()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Return DMA-related resources from the HCF. These consist of:
- * - buffers and descriptors for receive purposes
- * - buffers and descriptors for transmit purposes
- * - one 'reclaim' descriptor for the transmit path, used to fulfill a
- * certain H25 DMA engine requirement
- * - one 'reclaim' descriptor for the receive path, used to fulfill a
- * certain H25 DMA engine requirement
- *
- * This function is called at end-of-day or at re-initialization.
- *
- * PARAMETERS:
- *
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-void wl_pci_dma_hcf_reclaim( struct wl_private *lp )
-{
- int i;
-
- wl_pci_dma_hcf_reclaim_rx( lp );
- for( i = 0; i < NUM_RX_DESC; i++ ) {
- DBG_PRINT( "rx_packet[%d] 0x%p\n", i, lp->dma.rx_packet[i] );
-// if( lp->dma.rx_packet[i] == NULL ) {
-// DBG_PRINT( "wl_pci_dma_hcf_reclaim: rx_packet[%d] NULL\n", i );
-// }
- }
-
- wl_pci_dma_hcf_reclaim_tx( lp );
- for( i = 0; i < NUM_TX_DESC; i++ ) {
- DBG_PRINT( "tx_packet[%d] 0x%p\n", i, lp->dma.tx_packet[i] );
-// if( lp->dma.tx_packet[i] == NULL ) {
-// DBG_PRINT( "wl_pci_dma_hcf_reclaim: tx_packet[%d] NULL\n", i );
-// }
- }
-
- return;
-} // wl_pci_dma_hcf_reclaim
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_hcf_reclaim_rx()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Reclaim Rx packets that have already been processed by the HCF.
- *
- * PARAMETERS:
- *
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp )
-{
- int i;
- DESC_STRCT *p;
-
- //if( lp->dma.status == 0 )
- //{
- while ( ( p = hcf_dma_rx_get( &lp->hcfCtx ) ) != NULL ) {
- if( p && p->buf_addr == NULL ) {
- /* A reclaim descriptor is being given back by the HCF. Reclaim
- descriptors have a NULL buf_addr */
- lp->dma.rx_reclaim_desc = p;
- DBG_PRINT( "reclaim_descriptor: 0x%p\n", p );
- continue;
- }
- for( i = 0; i < NUM_RX_DESC; i++ ) {
- if( lp->dma.rx_packet[i] == NULL ) {
- break;
- }
- }
- /* An Rx buffer descriptor is being given back by the HCF */
- lp->dma.rx_packet[i] = p;
- lp->dma.rx_rsc_ind++;
- DBG_PRINT( "rx_packet[%d] 0x%p\n", i, lp->dma.rx_packet[i] );
- }
- //}
-} // wl_pci_dma_hcf_reclaim_rx
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_get_tx_packet()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Obtains a Tx descriptor from the chain to use for Tx.
- *
- * PARAMETERS:
- *
- * lp - a pointer to the device's wl_private structure.
- *
- * RETURNS:
- *
- * A pointer to the retrieved descriptor
- *
- ******************************************************************************/
-DESC_STRCT * wl_pci_dma_get_tx_packet( struct wl_private *lp )
-{
- int i;
- DESC_STRCT *desc = NULL;
- /*------------------------------------------------------------------------*/
-
- for( i = 0; i < NUM_TX_DESC; i++ ) {
- if( lp->dma.tx_packet[i] ) {
- break;
- }
- }
-
- if( i != NUM_TX_DESC ) {
- desc = lp->dma.tx_packet[i];
-
- lp->dma.tx_packet[i] = NULL;
- lp->dma.tx_rsc_ind--;
-
- memset( desc->buf_addr, 0, HCF_DMA_TX_BUF1_SIZE );
- }
-
- return desc;
-} // wl_pci_dma_get_tx_packet
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_put_tx_packet()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Returns a Tx descriptor to the chain.
- *
- * PARAMETERS:
- *
- * lp - a pointer to the device's wl_private structure.
- * desc - a pointer to the descriptor to return.
- *
- * RETURNS:
- *
- * N/A
- *
- ******************************************************************************/
-void wl_pci_dma_put_tx_packet( struct wl_private *lp, DESC_STRCT *desc )
-{
- int i;
- /*------------------------------------------------------------------------*/
-
- for( i = 0; i < NUM_TX_DESC; i++ ) {
- if( lp->dma.tx_packet[i] == NULL ) {
- break;
- }
- }
-
- if( i != NUM_TX_DESC ) {
- lp->dma.tx_packet[i] = desc;
- lp->dma.tx_rsc_ind++;
- }
-} // wl_pci_dma_put_tx_packet
-/*============================================================================*/
-
-/*******************************************************************************
- * wl_pci_dma_hcf_reclaim_tx()
- *******************************************************************************
- *
- * DESCRIPTION:
- *
- * Reclaim Tx packets that have either been processed by the HCF due to a
- * port disable or a Tx completion.
- *
- * PARAMETERS:
- *
- * lp - the device's private adapter structure
- *
- * RETURNS:
- *
- * 0 on success
- * errno value otherwise
- *
- ******************************************************************************/
-void wl_pci_dma_hcf_reclaim_tx( struct wl_private *lp )
-{
- int i;
- DESC_STRCT *p;
-
- //if( lp->dma.status == 0 )
- //{
- while ( ( p = hcf_dma_tx_get( &lp->hcfCtx ) ) != NULL ) {
-
- if( p != NULL && p->buf_addr == NULL ) {
- /* A Reclaim descriptor is being given back by the HCF. Reclaim
- descriptors have a NULL buf_addr */
- lp->dma.tx_reclaim_desc = p;
- DBG_PRINT( "reclaim_descriptor: 0x%p\n", p );
- continue;
- }
- for( i = 0; i < NUM_TX_DESC; i++ ) {
- if( lp->dma.tx_packet[i] == NULL ) {
- break;
- }
- }
- /* An Rx buffer descriptor is being given back by the HCF */
- lp->dma.tx_packet[i] = p;
- lp->dma.tx_rsc_ind++;
- DBG_PRINT( "tx_packet[%d] 0x%p\n", i, lp->dma.tx_packet[i] );
- }
- //}
-
- if( lp->netif_queue_on == FALSE ) {
- netif_wake_queue( lp->dev );
- WL_WDS_NETIF_WAKE_QUEUE( lp );
- lp->netif_queue_on = TRUE;
- }
- return;
-} // wl_pci_dma_hcf_reclaim_tx
-/*============================================================================*/
-#endif // ENABLE_DMA
projects / karo-tx-linux.git / commitdiff